If Bandage Toss is cast and the Amumu is rooted, Amumu will be pulled towards the target but will be rooted afterwards for the remaining duration

While in the process of being pulled towards a target, Amumu becomes immune to contact-based skill-shots such as Morgana's Dark Binding

Amumu can be hit by targeted abilities that have been activated before he begins being pulled to the target but hit after the pull has begun (I.e. If Amumu Bandages Vayne when Vayne Condemns Amumu, Amumu's bandage will hit Vayne, Amumu will be knocked back, then pulled towards Vayne; similar to the Blitz-Nautilus effect)

Once channeled, Bandage Toss will proc, even if Amumu dies immediate afterwards (I.e., if Amumu casts Bandage Toss and immediately dies afterwards, Bandage Toss can still fly out and stun an enemy, possibly killing them.) Amumu's corpse stays where it fell

Despair

(Toggle): Overcome by anguish, nearby enemies will be dealt a percentage of their maximum health plus a base amount as magic damage each second.

Cost: 8 mana per second

Cooldown: 1 second

Diameter of AoE: 300

Base Magic Damage: 8 / 12 / 16 / 20 / 24.

Health Drain: 1.5 / 1.8 / 2.1 / 2.4 / 2.7(+0.01 per ability power)%

Despair is a toggled point blank area of effect ability. While toggled on, Amumu deals magic damage every half second to all enemy units around himself, scaling on an affected target's maximum health.

(Passive): Amumu takes reduced damage from physical attacks. Each time Amumu is hit by an attack, the cooldown on Tantrum's active is reduced by half a second.

Damage Reduction: 2 / 4 / 6 / 8 / 10

(Active): Amumu deals magic damage to surrounding units.

Cost: 35 mana

Diameter of AoE: 200

Cooldown: 10 / 9 / 8 / 7 / 6 seconds

Magic Damage: 75 / 100 / 125 / 150 / 175 (+0.5 per ability power)

Tantrum passively reduces the amount of physical damage Amumu takes. When activated, Tantrum is a point blank area of effect ability that deals magic damage to all enemy units around Amumu. Taking damage will reduce the cooldown.